Chapter 8, Problem 8.79QP

Interpretation Introduction

Interpretation: the metal used in the given reaction system should be determined when the 39.46g of sample heated to form 31.7g of metal in the given process.

Concept introduction:

• Mole ratios between the reactants of a reaction are depends upon the coefficients of respective reactant in a balanced chemical equation.
• Equation for Number of moles of a substance, from its given mass is,

$\text{Number of moles}\text{=}\frac{\text{Given}\text{mass}}{\text{Molar}\text{mass}}$

• Molar mass of a substance from its given mass and number of moles is,

$\text{Molar}\text{mass }\text{=}\frac{\text{Given}\text{}\text{mass}}{\text{Number of moles}}$